140 







Fis 



Lcphionotits vandeisandei n. S]>. 



hitherto described from the Malay Archipelago. They measure 20 mm. in length, whereas their 

 breadth, that remains nearly equal over the total length, amounts to 5 mm., the bristles e.xcepted. 



The worms are nearly colourless except the elytra, which are 

 blackish. In the anterior region of the body the scales are over- 

 lapping each other, but in the posterior segments they leave the 

 median dorsal part bare. Each elytron (Fig. i) is reniform or oval, 

 alon<i- its exterior border beset with short, rather stout, cylindrical 

 cilia ; the internal region of its upper surface is sparingly covered 

 with small tubercles, whereas the remaining part is occupied by 

 rather large, blunt conical papillae, which in the v'icinity of the 

 scar of attachment have a pale colour. The ventral bristles are stout, with a hook-shaped apex, 

 like in Halosydna nebulosa Gr. (Marenzeller, Südjapanische Anneliden, III, PI. I, fig. i d) ; 

 10 to 12 densely crowded, denticulated rows occur on the short, dilated, distal region. 



The head (Fig. 2) is rounded rectangular, more broad than long, provided with a shallow, 

 median groove; from the anterior part of this groove the tentacle arises. Its 

 basal joint is nearly as long as the head, whereas its distal part, tapering 

 forward, is nearly thrice as long. The frontal prolongations, from which the 

 lateral antennae arise, have the same length as the basal joint of the tentacle 

 and the antennae extend forward as far as the tentacle. The antennae as well 

 as the tentacle below their tapering distal end are surrounded by a blackish 

 ring and in their basal part they show also some blackish pigment. The palps 

 are rather stout in their basal part and terminate in a filiform tip ; thev are 

 Lep.vaniici-saiidei Ti.&}^. somewhat lougcr thau the antennae and are provided with blackish pigment 

 over their whole length. Two large eyes are situated next to each other on the lateral part 

 of the head. The tentacular cirri differ very much in length ; the dorsal one is a trifle longer 

 than the antennae, whereas the ventral cirrus is half as long as the dorsal one. 



P. loi. To Adinetella (Polyjioë) longipedata Mc Intosh ought to be added : 



Stat. 178. 2°4o' Lat. S., I28°37'.s Long. E. North oft' Ceram. Depth 835 M. i specimen. 



96 



